C&amp;C efficiency of canopy hood exposed to horizontal air stream in commercial kitchen calculated by CFD analysis

Fujimura, Noriko; Kotani, Hisashi; Yamanaka, Tatsuhiko; Momoi, Yoshihisa; Sagara, Kazunobu; Masui, Kazunori

doi:10.1080/14733315.2017.1299517

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…In this study, to evaluate CFD simulations “k‐epsilon RNG” turbulence flow model was taken, which are more applicable for kitchen environments, as reported by many researchers (Abanto & Reggio, 2006; Fujimura et al, 2017; Livchak et al, 2005; Mak & Yik, 2002). Whereas for the “lattice of the CFD model, tetrahedral volume elements” were employed.…”

Section: Methodsmentioning

confidence: 99%

Investigating thermal environment inside the kitchen of air‐conditioned pantry car on Indian Railway using CFD

Alam

Sharma

Salve

2022

Hum Ftrs & Erg Mfg Svc

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In an indoor kitchen environment, proper installation of supplying air system is essential for maintaining optimal human thermal comfort level. Current thermal comfort investigation has been accomplished during "various cooking periods (breakfast, lunch, snacks, dinner)" inside the air-conditioned kitchen environment of railway pantry car in India. The study goals to improve thermal comfort inside the pantry kitchen by implementing proper installation of the supply air system. A field experiment and computational fluid dynamics approach has been carried out during the summer season. Also, standard effective temperature (SET) index was utilized to determine the thermal comfort status. Three proposed design modified cases of pantry cars (based on supplying air system concepts) have been executed followed by validation and comparison with the existing case model. Results revealed modified Case III as a better design concept (indicating better air supply circulation and temperature decrease at the desired location) compared to the existing and other two proposed cases. Simultaneously, the SET index range was 26.5-28.6°C; indicating "comfortable thermal sensation throughout the cooking period." This study's outcomes suggest improvements in thermal comfort and energy savings of "airconditioned" pantry car kitchens in "Indian Railways" that could be referred directly.

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Section: Methodsmentioning

confidence: 99%

Investigating thermal environment inside the kitchen of air‐conditioned pantry car on Indian Railway using CFD

Alam

Sharma

Salve

2022

Hum Ftrs & Erg Mfg Svc

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“…where, ui -velocity of fluid xi (i=1, 2, 3), ρ-air density,dynamic viscosity, Ρ-effective density, Γ-diffusion coefficient, and -Coolant temperature (℃). According to the literature the "k-epsilon RNG" turbulence flow model is included for simulation analysis that is more suitable for kitchen environments [32][33][34][35][36]. In particular tetrahedral volume, elements were used for the lattice of the CFD model.…”

Section: Conservation Of Momentummentioning

confidence: 99%

Enhancement of Thermal Comfort Inside the Kitchen of Non-Airconditioned Railway Pantry Car

Alam¹,

Salve²

2021

IJHT

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There are ample literature studies available, focusing on hot-humid built environment, which have achieved an increase in thermal comfort conditions by proper installation of ventilation-systems. The present thermal comfort study has been carried out in the kitchen environment of a non-air-conditioned railway pantry car in Indian Railways. The purpose is to enhance thermal comfort level under the currently applied ventilation system inside the kitchen of pantry car by determining the standard effective temperature (SET) index. During the summer and winter seasons, a field study was carried out to obtain the value of air temperature, globe temperature, relative humidity, and air velocity inside the pantry car for estimation of the SET index. A computational fluid dynamics (CFD) analysis was used to obtain a better-modified case model of the pantry car kitchen for the improvement of thermal comfort. The design interventions for the pantry car kitchen were created, with emphasis on increasing energy efficiency based on low-power consumption air ventilation system. The study results indicated that, modified case-I model has a better ventilation design concept as compare to the existing and other models, which increased the air velocity and significantly decreased the air temperature inside the kitchen of pantry car at all cooking periods. A value of SET (28.6–30℃) was found with a comfortable thermal sensation within all cooking periods, which is better for the pantry car workers. This finding suggests a sustainable improvement in the thermal environment of the "non-air-conditioned" pantry car kitchen in the Indian Railways, which can be applied immediately.

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“…Araştırmacılar genellikle bu çalışmalarda davlumbaz motoru ve davlumbaz tasarımı üzerine çalışmaktadır. Çalışmaların davlumbaz hava debisi ve enerji tüketimi üzerine olduğu görülmektedir [7,[10][11][12][13]. Literatürde davlumbazda kullanılan komponentlerinin ürün performansına (gürültü performansı ve yağ filtresi verimliliği) etkileri ile ilgili yeteri kadar çalışma olmadığı görülmüştür.…”

Section: Introductionunclassified

Davlumbazlarda Kullanılan Komponent Özelliklerinin Enerji Tüketimi ve Çalışma Performansı Üzerine Etkisinin Deneysel-İstatiksel Olarak İncelenmesi

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Nas

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada mutfak davlumbazlarında kullanılan, motor ve filtrelerin ürün performans ve enerji tüketimi üzerine etkileri deneysel ve istatiksel olarak incelenmiştir. Bu amaç için mutfaklarda kullanılan iki farklı boyuta sahip piramit tipi, davlumbaz seçilmiştir. Deneylerin gerçekleştirilmesi için iki farklı boyutta (60-90 cm) gövde, iki farklı özellikte motor (450-650 m 3 /h) ve iki tip filtre (3-5 katman) konfigürasyonuna sahip davlumbazların üretimi yapılmıştır. Çalışmanın deneysel tasarımı Taguchi L 8 dizilimi kullanılarak oluşturulmuş ve deneyler gerçekleştirilmiştir. Deney sonuçları incelendiğinde, 60cm boyuta sahip davlumbazların yıllık enerji tüketimi (AEC) en düşük 43,6 kWh iken en yüksek 62,7 kWh olduğu ve 90cm boyuta sahip davlumbazların ise en düşük 48,7 kWh iken en yüksek 63,0 kWh olduğu görülmüştür. Filtrelerin yağ tutma verimliliği incelendiğinde en düşük yağ filtre verimliliği %68,4 olarak 90 cm boyuta sahip davlumbazda ve en yüksek %80,6 olarak 60 cm boyuta sahip davlumbazda oluşmuştur. Deneysel sonuçların istatiksel olarak incelenmesinde Sinyal/Gürültü oranları, Anova ve Regresyon analizleri kullanılmıştır. Sinyal/Gürültü oranları incelendiğinde en verimli noktadaki debi (Q BEP) , yıllık enerji tüketimi (AEC), maksimum devirde hava akışı, gürültü performansı (L WA) ve yağ filtresi verimliliği (G FE) için en ideal seviyeler sırası ile A

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C&C efficiency of canopy hood exposed to horizontal air stream in commercial kitchen calculated by CFD analysis

Cited by 7 publications

References 1 publication

Investigating thermal environment inside the kitchen of air‐conditioned pantry car on Indian Railway using CFD

Investigating thermal environment inside the kitchen of air‐conditioned pantry car on Indian Railway using CFD

Enhancement of Thermal Comfort Inside the Kitchen of Non-Airconditioned Railway Pantry Car

Davlumbazlarda Kullanılan Komponent Özelliklerinin Enerji Tüketimi ve Çalışma Performansı Üzerine Etkisinin Deneysel-İstatiksel Olarak İncelenmesi

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